This circuit is extremly simple and cheap. It uses a standard 555 and a CD4093BE, which is a NAND gate.
The 555 is wired to achieve max speed, this may be above 300 kHz, increasing slightly from 12 to 18 V.
555 needs 6 to 18 VDC.
The signal has a very short low time, which is why, it is simply inverted by the NAND chip. After reducing the current from pin 3 to about 5mA (i think it's 840 Ohm), be feed it into both inputs of the first NAND GATE. Then whenever the signal goes false (low), the condition and output goes true (high), and vice versa, basicly inverting the signal. A NOT gate, without the fuss of dealing with lots of to be adjusted parts. After a Resistor (do not draw too much current from the NAND chip, they blow up easily) I have here an LED, but you could also use this at the base of a transistor, or a Darlington + Power Transistor stage.
Unused Inputs of the CD4093 must be connected with Minus/Ground. They are a bit sensitive, never draw to much current, so a 1kOhm resistor or higher is recommende, before you do something with the signal. The pulse duty is very short, I would guess about 4%.
I thought I share that, since it's so simple.
Can't you make your photo any larger? I'm having trouble counting the dust particles for my replication.
Resistor looks like 820 ohms, 10 percent.
Tinsel, you're welcome. Try to stay within +- 10% of the dust particles, which should work fine. And s for the Spaghetti Sauce splashes, try to substitute with ketchup, if Bolognese is not at hand.
Try to be more optimistic. You can do that!
Free Photo Converter allows you to resize your photos to match the requirements of this forum. It is very simple and easy to use.
Get a grip it's 1.3 MB, and for the first time ever you can actually see every important detail.
Yeah it may blow up the layout. Take it or brake it. If anybody is interested in the circuit, he'll be glad it's so detailed and sharp.
NOTE: forgot to mention: frequently check temperature of the chips (but don't touch the legs). If they're getting real hot, lower input voltage and/or output current. If it's still getting too hot (too hot to touch comfortly), choose an other design with a lower pulse rate, see also "50 555 Circuits" by Colin Mitchell.
Sigh. If your chips get too hot it means you are abusing the chips.
And if your posted images are too large physically and too large in terms of file size, it means you are abusing the forum and its members.
Yeah, maybe I abused you. But you just violated international copyright. (Berne Convention).
Besides, I abuse you? Not a freaking single thanks, only nitpicking on image size. What a frustrated person are you anyway?
By useing the term "abuse" in such a way, you just marginalized the pain of all those who have been abused truely.
Nevertheless, thanks for resizing the image. Just work on your hobby forum cop behaviour.
dieter,
I gave you the name of a free photo converter so you can make your photos the proper size before posting them. Making them the proper
size is showing respect and consideration for others that use this forum. There is also a forum rule against posting oversize pictures for the
very reason they make it hard to read the thread. I realize respect and consideration of others is almost totally gone in our modern society
but there are still a few of us around that consider those things still to be important.
Respectfully,
Carroll
Still not one "thanks" and you call that respect? You're rude. I maybe haven't known about image size laws, but you're just rude. I was in a good mood, willing to share something, but all I see is ppl peeing on it.
Btw I have photoshop, gimp, artweaver and even paint, but thanks for the lesson.
BTW2 I can't read ANY thread here without scrolling each line horizontally, but do you see me complaining?
quote:
[size=8pt !important]Allowed file types: txt, tif, xls, doc, odt, pdf, jpg, jpeg, gif, mp3, mpg, flv, mp4, mpeg, png, rm, ra, rmv, avi, zip, wmv, wma, rar, qt, mov, swf, asf, wm2d, 3gp, 3g2
Restrictions: 12 per post, maximum total size 7000KB, maximum individual size 7000KB
unquote[/font][/size]
From the Admin March 3, 2008
Quote
"Hi ALL,
due to bug inside the forum software and the backup problem
with the increasing attachment size folder ( which is now already 4.5 GigaBytes big)
I have deceided to reduce the file attachment size to
50 Kbytes maximum per file.
This has the advantage, that every picture attachment must be smaller or equal
50 Kbytes, which is okay for e.g. 800x600 JPEG pics at
a good enough compression rate.
Please if you don?t have any freeware image software use
something like
www.Irfanview.com (http://www.irfanview.com)
or
www.Gimpshop.com (http://www.gimpshop.com)
or
www.Picasa.com (http://www.picasa.com)
for your image editing software and then compress your digital pictures
to less than 50 Kbytes before uploading them to over here."
End of quote
If you think asking someone to abide by the forum rules is rude then I am sorry I offended you. But you have to admit the resized photo TK
posted is much easier to follow than having to scroll back and forth all over the place to try and follow what you posted. I do know some
others on this forum have posted that they will NOT read a post if they have to scroll back and forth to read it.
I don't have a problem with you as you seem to think. I actually have enjoyed reading some of your other posts. I thought I was being
polite to just mention an easy way to resize your photos but apparently you took that suggestion as some kind of criticism when it was not
intended that way.
Again, respectfully,
Carroll
Quote from: TinselKoala on March 14, 2017, 07:04:43 PM
Sigh. If your chips get too hot it means you are abusing the chips.
And if your posted images are too large physically and too large in terms of file size, it means you are abusing the forum and its members.
Of course you will not be the best person to talk about abuse, because you have already offered several expressions of mockery and sarcasm with many members of this forum as you did a few posts ago.
(Can't you make your photo any larger? I'm having trouble counting the dust particles for my replication)
This is abuse and disrespectful but you ... could not pass without giving your pinch ... Have things that never change.
OK, bye bye then. I've removed my smaller version, so have all the fun you need.
Don't want my help? Then just put me on your ignore list and you'll never have to read my comments again.
Carroll, I just didn't know that. And Stefan should update the text in the Posting page. And maybe block or autoscale uploads that are too big, other forums do that too.
As for Tinsel, being on my ignore list since years, I will stop unignoring individual postings, as they just make me defensive against anyone.
kr
TK, didn't you want the whole world to see your first working 555 circuit in its full glory when you were little? Colin Mitchell is an Aussie legend, still got his 'Build FM bugs ' series books from the 80s on my shelf. Good to see the old fart hasn't croaked it.
Well
I know many people use the phone to read and comment here ,and it can be a nuisance to size images [took me three attempts and still not right on my PC... :o
please have a good day , we are all rowing the same boat....and truly need to Vet all claims ,
so we can get where we're going faster..[not in circles]
that is no reflection on Dieter's share here , just a profoundly obvious,,,observation
respectfully
Chet K
PS
for much greater detail of below ...see first post in this thread.
You had better be careful there Chet.
QuoteBut you just violated international copyright. (Berne Convention).
BTW. the two wires that go over the 555, they look as if they're touching. They're not! and may not. The left one is much higher.
Also, a simple 5 cent blinking LED is used: when it blinks, the signal is dc. when it is lit continously then there is a pulse with low space voltage (mark/space, or low/high).
Or, use a scope. If you have one. Which I haven't.
I think such a short duty high frequency pulse is especially interesting for collapsing fields or impedance pulling, such as in jack no skills capacitive open coil system, which I actually built it for.
Ignore this:
:P
Quote from: nelsonrochaa on March 16, 2017, 05:43:30 PM
***** ;)
Nelson, ignor what ? TK circuit or 'ignor this ? regards AG (confused as ever ;) )
Quote from: AlienGrey on March 17, 2017, 05:54:45 AM
Nelson, ignor what ? TK circuit or 'ignor this ? regards AG (confused as ever ;) )
Hi AlienGrey ,
I just answer ***** ;) the "ignore this .." is Sarcasm from TK , but i just answer five stars to the initiative of TK to put the circuit with scope shots, is really more productive then their habitual sarcasm words . Hope i clarify you or anyone about my answer .
Cheers
Note: The above results were obtained with a bipolar 555 flavor: NE555P. Using a CMOS 555 flavor TLC555CP the results are very different.
With the CMOS 555 the LED comes on brighter... because the duty cycle is much greater, due to the frequency being much higher while the pulse itself is nearly the same.
Also, I tried a Philips brand bipolar NE555N from Thailand -- interestingly it performs more like the CMOS, with a frequency of about 1.63 MHz and a duty cycle of 27 percent.
TK being on my ignore list, makes it silly to look at my own thread that is filled with his postings.
Please don't post in my threads anymore, TK, ok? Can you do that? Or do you insist on your "right" to aggressively disturb the peace of other people? If so, consider yourself a Forum Troll, spammer and stalker.
Your appropriate response to me should be "Thank you very much TK, I didn't know that the performance of this circuit depended so much on which particular kind of 555 timer is used, _because I have no oscilloscope_ and I can't test things properly."
Stick to your ignore list if you don't want to see my comments. If you don't want me to examine your claims, don't make them. If you don't want people to test "your" circuits.... don't post them. If you don't want to be criticized for posting huge images... learn how to use your computer or cellphone to make them smaller.